Rain Bird WR2 Wireless Sensor User Manual

This manual provides installation, wiring, and programming instructions for the Rain Bird WR2 Wireless Rain or Rain/Freeze Sensor.

Brand: RAINBIRD
Category: Other
Document type: User Manual
Language: English
Pages: 36
File format: PDF
File size: 1.2 MB
Published: 13 November, 2026
Updated: 13 November, 2026
Model: WR2
MD5 checksum: 294F60EDF81152AE6EA20FAA2E529DC0
PDF: Rain Bird WR2 Wireless Sensor User Manual PDF

About this manual

The Rain Bird WR2 Wireless Sensor is designed to suspend irrigation cycles during rain or freeze events. It consists of a Controller Interface unit and a Sensor unit that must be synchronized. All settings are programmed through the Controller Interface, which displays icons for battery life, signal strength, and sensor status.

What's inside

Safety Information
WR2 Components
Mounting the Controller Interface
Wiring the Controller Interface
Initial Power Up
Controller Interface Display Icons
Environmental Conditions
Irrigation Modes
Programming the Set Points
Troubleshooting

Specifications

Cable Length	30 inches (76.2 cm)
Battery Type	Lithium CR2032
Voltage Requirement	24VAC only
Rainfall Set Point Range	1/8" to 1/2"

Frequently asked questions

What happens if it rains during an irrigation cycle?

The sensor will interrupt the active irrigation cycle using the 'Quick Shut Off' feature.

Can I use the WR2 with 110V or 220V circuits?

No, the unit is designed for 24VAC circuits only and should not be used with 110 or 220/230 VAC circuits.

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